名校
1 . 已知正方体
的棱长为
,
为
的中点,
为面
的中心,现将正方体绕直线
旋转一周,得一几何体
,则( )
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721678119370752/2763256464621568/STEM/93a43912-9332-4003-a141-134b5e9329f9.png?resizew=260)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721678119370752/2763256464621568/STEM/93a43912-9332-4003-a141-134b5e9329f9.png?resizew=260)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
名校
2 . 如图,网格纸上小正方形的边长为1,粗线画出的是某空间几何体的三视图,则该几何体的表面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/22fc0871-82f0-4ef9-afc4-3b8d3ad60df4.png?resizew=186)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/22fc0871-82f0-4ef9-afc4-3b8d3ad60df4.png?resizew=186)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次